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Title: | Studying Avalanches in the ground-state of the two-dimensional random field Ising model driven by an external field |
Author: | Frontera Beccaria, Carlos Vives i Santa-Eulàlia, Eduard |
Keywords: | Física estadística Termodinàmica Sistemes dinàmics diferenciables Equacions d'estat Transformacions de fase (Física estadística) Statistical physics Thermodynamics Differentiable dynamical systems Equations of state Phase transformations (Statistical physics) |
Issue Date: | 2000 |
Publisher: | The American Physical Society |
Abstract: | We study the exact ground state of the two-dimensional random-field Ising model as a function of both the external applied field B and the standard deviation ¿ of the Gaussian random-field distribution. The equilibrium evolution of the magnetization consists in a sequence of discrete jumps. These are very similar to the avalanche behavior found in the out-of-equilibrium version of the same model with local relaxation dynamics. We compare the statistical distributions of magnetization jumps and find that both exhibit power-law behavior for the same value of ¿. The corresponding exponents are compared. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.62.7470 |
It is part of: | Physical Review E, 2000, vol. 62, núm. 5, p. 7470-7473 |
URI: | http://hdl.handle.net/2445/18735 |
Related resource: | http://dx.doi.org/10.1103/PhysRevE.62.7470 |
ISSN: | 1539-3755 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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